Ground proximity approach warning system without landing...

Details Ground proximity approach warning system without landing... Ground proximity approach warning system without landing...

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G08G 5/02 (2006.01) B64D 45/04 (2006.01) G05D 1/06 (2006.01)

Patent

CA 1317010

GROUND PROXIMITY APPROACH WARNING SYSTEM WITHOUT LANDING FLAP INPUT Abstract of the Disclosure A ground proximity warning system is dis- closed which can recognize when an aircraft is on a final approach to an airport without utilizing a land- ing flap signal input. Airports together with the surrounding terrain topography are modeled by a simple geometric shape, such as, an inverted truncated cone, and stored on-board the aircraft. The system uses navigational data to determine the distance of the aircraft from the geometric model. Once the aircraft is determined to be within the area defined by the geometric model, the system provides an enabling en- velope indicative that the aircraft is on a final approach for enabling various ground proximity warning systems. Also disclosed is a system for altering the enabling envelope as a function of the aircraft's alignment with a particular runway.

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